Material mixing device



Aug 24, 19430 J. A. LYNCH MATERIAL MIXING DEVICE Filed Jan. 15, 1941 w /w N z m d 74 w W fi mm Patented Aug. 24, 1943 p I UNITED STATES PATENT OFFICE MATERIAL MIXING DEVICE Joseph A; Lynch, Middletown, N. Y. I Application January 15, 1941, Serial No. 374,588

1 Claim.

a mixing device in which the mixing chamber is provided with a stop means cooperable with an oscillatable mixing paddle or piston to insure complete mixing of the coloring matter and the olemargarine.

It is a still further object of the invention to provide a device of the kind stated which is of a portable nature and which may be readily dis mantled for cleaning and refilling.

Additional objects, advantages and features of invention will be apparent from the following de. scription and accompanying drawing, wherein Figure 1 is a top plan View of the device, with a portion broken away.

Figure 2 is a side elevation thereof. Figure 3 is a cross section on the line 3'.% Figure 1.

Figure 4 is a perspective view of the mixing I paddle or piston.

Attention is first invited to Figures 1, 2, and 3, wherein there is shown a substantially rectangular base I upon which there is suitably secured a housin II having a cylindrical chamber it. A segment-shaped abutment I3- is formed on the wall of the chamber, the apex I l of which is directed toward the axis of the chamber IE but stopping short thereof to accommodate a shaft I5 of a planiform mixing paddle or piston It. It should be noted that th apex M' approaches the shaft l5 quite closely, in order that material being mixed may not pass therebetween during operation. The abutment l3 extends the full height of the chamber l2.

The paddle or piston It includes a lower hearing l! adapted to be oscillatably mounted in annular recess l 8 formed axially of the base and an upper bearing l9 positioned Within a circular opening 20 of a closure top 2|, when the parts are in assembled relation. The upper end of the shaft is of angular formation for rigid mounting of an operating handle 22, for oscillating the paddle or piston.

A compression plate 23 is integrally formed with the shaft l5 extending at right angles thereto, of a height corresponding to :the height of the chamber I2, and of a length so as to abut the peripheral wall of the chamber.

The plate 23 is formed with right angular slots 24, four being shown, arranged in pairs, the corner of each pair of slots being positioned on a line diagonal to each other. Thus, there is provided a horizontally disposed open portion 25 and a vertically disposed portion 26, and obviously when the paddle or piston is oscillated, the material whether it be olemargarine or otherwise, will be forcibly compressed and pass through the openings to effect a thorough mixing of th mass.

In the present instance, the closure top 2| is shown as a flat circular disk of a diameter corresponding to the outer circumference of the housing I I and secured thereto by means of stud bolts 21 circumferentially spaced around the housing. Wing nuts 28 are employed upon the bolt to permit ready removal of the closure top.

Considerable pressure is required to mix a mass of material, and in order to firmly hold the device against movement, there are provided a pair of clamp bolts 29 comprising a right angular arm 30 and a shank 3| of a length to extend through the base H3. The outer end of the shank is threaded and receives a wing nut 32. The arm 30 is positioned beneath an edge of a table or the like 30, and by tightening of the nut 32 the arm will be drawn tightly against the table portion.

In order that an even and forcible pressure may be applied to the paddle or piston, the handle 22 is provided with a knob 33 at on end, while the opposite end of the handle is shaped to form a grip portion.

As clearly shown in Figure l, the segment shaped abutment it receives the paddle or piston ll flatly thereagainst, and obviously, the material in the chamber will be extruded through the slots 25 and 26, so that a very thorough intermix of the material is obtained.

While I have shown and specifically described my invention, this is by way of illustration only, and I consider as my own all such modifications in structure as fairly fall within the scope of the appended claim.

I claim:

In a device of the character described comprising a body member having an annular chamber, said chamber having an axial bearing, a shaft journalled in the bearing, a planiform piston carried by the shaft of a size to snugly traverse the walls of the chamber, said piston having a plurality of angular slots extended transversely therethrough, a removable closure for the chamher having an axial opening for the shaft, 21. segmental-shaped abutment fixed in the chamber, the apex of which stops short of the shaft, and having side Walls complemental t0 the faces of the piston, and a double grip handle member fixed to the shaft.

JOSEPH A. LYNCH. 

